We've talked to death the companions that we have, but not much about the one's that we will probably get, namely Halsin and Karlach. You don't get to know much about either, but I can tell that I will almost certainly like Halsin better than any current companion other than maybe Shadowheart, so he will replace one of the others. And the same with Karlach, we know next to nothing about her, but in the little interaction we get, I think she will end up being part of my party as well.
A couple of other thoughts here, I remember that I've had Shadowheart with me in the Blighted Village when you explore the school there. I seem to remember she gets something like a memory of the place and I wouldn't be surprised if later we find out she was one of the 'missing' children from the poster on the wall. Also, one of the things that makes me wonder about both Asterion and Gale was that they seemed open to taking Raphael's offer, so if you don't keep your approval with them, I wouldn't be surprised if they end up taking the deal and we end up fighting them at some point. I wonder if the soul coins end up coming into play before Act 1 ends, maybe as the way to buy your way out of getting the tadpoles removed.
